Since its a vr6, look for a bad head gasket around cyl. #1 (p. side rear corner). Water pumps really like to fail on early vr6's, as do timing chain tensioners.

Sunroofs are always broken in VW's. they can be pretty expensive to fix.

Rear spoiler not working is probably just the motor. No biggy.

Depending on the mileage and condition, $2500 might not be too bad. be prepared to spend at least 1/2 that in repairs in the 1st year alone.

Generally with VW's, its worth the time and effort and money to find one in really really good condition. VW's that have been looked after will still break down, but not nearly as much, and you won't also be constantly repairing all the shit the prev. owner never did.